package com.example.myutil;

import javax.servlet.http.HttpServletRequest;
/**
 * 
 * @title IpAddrUtil.java
 * 获取IP地址
 * @author zhanglei
 * @date 2014-11-5
 */
public class IpAddrUtil
{

	public static String getIpAddr(HttpServletRequest request)
	{
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getRemoteAddr();
		}
		return ip;
	}
}
